these 4 derivations will be built:
  /nix/store/3my1qzn3r6728c9zn0rfr2jskndh104x-clan-cli-source.drv
  /nix/store/610c8i9qqxzfk410952rx5sbbbxx4mw8-clan-cli.drv
  /nix/store/jrvgh7hg1jd2hlwx2cs25v0wza8wisbh-tofu.drv
  /nix/store/ixa941gnfvdv4ddxl58k5dxwb7nvz6sa-cache-new.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy